Plaster lath



Dec. 9,1924. 1,518,337

V F. MAKOWSKI PLASTER LATH Filed March 4, 1924 IN VEN TOR. cohn 17. Midi mwfslc Il BV mmm.

A TTORNEY Patented Dec. 9, 1924.

UNITED STATES PATENT OFFICE.

JOHN F. MAKOWSKI, 0F STOCKTON, CALIFORNIA, ASSIGNOR TO CALIFORNIA CEDAR PRODUCTS COMPANY, 0F STOCKTON,

CALIFORNIA, A CORPORATION.

`1 LASTEB LATE.

Application led March 4,

To all whom t may concern.'

Be it known that I, JOHN F. MAKowsKI, a citizen of the United States, residing at Stockton, county of San Joaquin, State of California, have invented certain new and useful Improvements in Plaster Laths; and I do declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this application.

This invention relates to the building art and particularly to wall construction.

The object of the invention is to produce a type of plaster lath similar to that described in detail in my allowed application for patent, Serial No. '608,595, in which asphalt can be used as the water proof element for the surfacing of the plaster board to which the finely divided mineral fragments are adhered. My aim in the invenfion is to mix with the asphaltum a hardening elementso that when subjected to heat it will not readily soften. l

The figure of the drawings is a cross sccional view of a piece of my improved lat In the drawing the numeral 1 designates the base board of the lath, preferably plaster board, 2 designates the"adhesive surface lamination to whichthe mineral fragments 3 are adhered.

In the manufacture of the lath the material for the lamination 3 is made up of an emulsion of asphalt and bsilicate of soda in the preferred proportions of thirty parts asphalt to seventy parts of silicate of soda.

This emulsion is spread over the base 1924. Serial No. 696,768.

While I have herein set forth the preferl redA elements of the improved board, still in practice I may make such deviations therefrom as may fall within the scope of the invention as defined by the appended claims.

Having thus described my invention what I claim as new and useful and desire to secure by Letters Patent is 1. Plaster lath comprising a base, a surface lamination thereon consisting of asphalt and a hardening element, and finely divided mineral fragments adhered to such lamination.

2. Plaster lath comprising a base, a surface lamination thereon consisting initially of an emulsion of asphalt and silicate of soda, and finely divided mineral fragments adhered to such lamination.

3. Plaster lath comprising a'base, a surn face lamination thereon consisting initially of an emulsion of asphalt and silicate of soda in the proportions of thirty parts asphalt to seventy parts silicate of soda, and finely divided mineral fragments adhered to such lamination.

In testimony whereof I affix my signature.

JOI-IN F. MAKOWSKI. 

